The more dogs you care for, the more important training becomes. You can survive one ill-mannered canine, but two poorly behaved dogs—or several—will make your, and their, lives miserable. Your benevolent but firm leadership lends itself to peace in the pack. Something as simple as consistently requesting them to sit for a cookie before going out serves as a constant reminder that you’re in charge.
I have four dogs of my own; I stand squarely in the “more is better” camp. The thousands of dogs awaiting homes in shelters and rescue groups second this emotion. Think it through, make introductions carefully, train and manage well, and you’ll have another lifelong love.